Magnetostriction and anomalous thermal expansion of single crystals of gadolinium

Journal Article · Tue Jan 01 04:00:00 EST 1963 · J. Phys. Soc. Japan

DOI:https://doi.org/10.1143/JPSJ.18.97· OSTI ID:4746118

Bozorth, R M; Wakiyama, T

Measurements were made with strain gauges of the magnetostriction, λ, and the thermal expansion coefficient, α, of gadolinium single crystals from 4 °K to above the Curie point. The four magnetostriction constants appropriate for a hexagonal crystal were evaluated, and special attention was given to the forced magnetostriction and its relation to the anomalous thermal expansion near the Curie point. By the use of the usuai thermodynamic relations the results show that compressive stress when applied parallel to the hexagonal c axis reduces the molecular field, as in iron, and when applied parallel to the a axis it increases the molecular field, as in nickel. The anomaly in the thermal contraction is unusually large in the c direction. Both lambda and alpha were also measured for polycrystalline material. (auth)

• Research Organization: Tokyo Univ.
• Sponsoring Organization: USDOE
• NSA Number: NSA-17-016703
• OSTI ID: 4746118
• Journal Information: J. Phys. Soc. Japan, Journal Name: J. Phys. Soc. Japan Vol. Vol: 18
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

CRYSTALS
DEFORMATION
EXPANSION
GADOLINIUM
GAGES
LOW TEMPERATURE
MAGNETIC FIELDS
MEASURED VALUES
METALS, CERAMICS, AND OTHER MATERIALS
MONOCRYSTALS
STRESSES
TEMPERATURE
THERMODYNAMICS